Study of Pu sorption behavior in natural clay

Kinetics of Pu(V) sorption on clays was studied under conditions similar to those expected at the waste repository. Batch sorption, sequential extraction (SE), oxidation state analysis and modeling were applied to study sorption mechanisms of Pu. The composition of clay coatings and their transforma...

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Bibliographic Details
Published in:	Journal of radioanalytical and nuclear chemistry Vol. 304; no. 1; pp. 53 - 59
Main Authors:	LujanienÄ, G, Stamberg, K, Pakstas, V, JuskÄnas, R, KulakauskaitÄ, I, Semcuk, S, Mazeika, K, Vopalka, D
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Netherlands 01-04-2015 Springer
Subjects:	Carbonates Chemistry Chemistry and Materials Science Diagnostic Radiology Hadrons Heavy Ions Inorganic Chemistry Nuclear Chemistry Nuclear Physics Physical Chemistry Sequential extraction Oxidation state distribution Pu(V) Sorption kinetics Natural clay Pu(IV)
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Summary:	Kinetics of Pu(V) sorption on clays was studied under conditions similar to those expected at the waste repository. Batch sorption, sequential extraction (SE), oxidation state analysis and modeling were applied to study sorption mechanisms of Pu. The composition of clay coatings and their transformation were investigated using the Mössbauer spectroscopy and X-ray diffraction. In spite of the Pu(V) fast reduction its bonding to the clay was found to be different as compared to the experiments with Pu(IV). The largest portion of Pu was associated with exchangeable and carbonate fractions indicating its possible higher mobility in the environment.
ISSN:	0236-5731 1588-2780
DOI:	10.1007/s10967-014-3585-0